DAYS USUALLY OBSERVED Not Legal Holidays ARMED FORCES DAY — Third Saturday in May. CITIZENSHIP DAY — September 17 FATHER'S DAY — Third Sunday in June. FLAG DAY — June 14. (Legal in Pa.) MOTHER'S DAY — Second Sunday in May. UNITED NATIONS DAY — October 24. WEDDING ANNIVERSARIES Traditional List Recommended by Social Authorities 1st Paper 2nd Cotton 3rd Leather 4th Fruit and Flowers 5th Wooden 6th Sugar and Candy, Iron 7th Woolen or Copper 8th Bronze or Pottery 9th Willow or Pottery 10th Tin or Aluminum 11th Steel 12th Silk or Linen 13th Lace 14th Ivory 15th Crystal 20th China 25th Silver 30th Pearl 35th Coral 40th Ruby 45th Sapphire 50th Golden 55th Emerald 60th Diamond 75th Diamond